...is a good thing to have when you are disassembling or reassembling a component. I found some of these pads at the local thrift store for cheap and they are great. I'm sure I'm not the first person to use them in the garage. Plastic backing, absorbent white pad for high contrast and disposable. When you're done just ball the whole thing up and toss it in the trash. It kinda makes me feel like a pro who knows what he's doing- even if I'm not.